Ended up just returing the TP Link Decco M9 set from Costco even after trying the latest firmware. The Decco set is NOT very intelligent and would have my devices connecting and staying attached to...

@Jack2222 Interesting, just got the Deco M9 Plus 3 pack and having the same issue. The 3rd unit won't select the 2nd unit for a better signal source. Instead its choosing the furtherest away main...

@marcelvanrooden I just bought a 3pk Deco M9 Plus from Costco. I found the out of box experience with the 2019 1.12 firmware unstable. My setup is AP mode connected to my ASUS RT-68U, fast roaming...